ngx_lua uses nginx internal jumps to improve access efficiency nginx apache nginx php nginx rewrite

Sometimes we need to request external links in Lua. I have tried several methods and found that this method has the best performance

<code>    location /<span>set</span> {
        default_<span>type</span><span>'text/html'</span>;
        proxy_<span>set</span>_header Host test.yufei.com;
        proxy_connect_timeout <span>5</span>s;
        proxy_send_timeout <span>3</span>s;
        proxy_<span>read</span>_timeout <span>3</span>s;
        proxy_pass http://test.yufei.com/api?a=<span>$aaa</span>&b=<span>$bbb</span>;
    }

    location /change {
        <span>set</span><span>$a</span><span>''</span>;
        <span>set</span><span>$b</span><span>''</span>;
        content_by_lua <span>'
            local time = os.date("%Y%m%d")
            local args = ngx.req.get_query_args()
            local a = args["a"]
            local b = args["b"]
            local res = ngx.location.capture("/set",
                { share_all_vars = true,
                 vars = { a = aaa , b = bbb }
                 })
            local text = res.body
            ngx.say(text)
            ngx.exit(200)
        '</span>;
    }</code>

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The above introduces how ngx_lua uses nginx internal jumps to improve access efficiency, including nginx content. I hope it will be helpful to friends who are interested in PHP tutorials.